1. Division of Research, Kaiser Permanente Northern California Oakland CA USA
2. Department of Health Systems Science, Kaiser Permanente Bernard J. Tyson School of Medicine Pasadena CA USA
3. Department of Obstetrics and Gynecology Kaiser Permanente, Oakland Medical Center Oakland CA USA
4. The Permanente Medical Group Kaiser Permanente Northern California Oakland CA USA
5. Departments of Epidemiology, Biostatistics and Medicine University of California, San Francisco San Francisco CA USA
6. Department of Medicine Stanford University Palo Alto CA USA
7. Magee‐Womens Research Institute, Department of Obstetrics, Gynecology and Reproductive Sciences, Epidemiology and Clinical and Translational Research University of Pittsburgh Pittsburgh, PA USA
8. Department of Neurology, Kaiser Permanente, Walnut Creek Medical Center Walnut Creek CA USA